I currently have the XG1v4 box but I’ve always had a/v sync issues for years now with Comcast. It seems to vary from channel to channel and is quite inconsistent. Oddly enough the audio is always behind the video so any adjustments with audio delays just makes it worse. The interesting thing I’ve noticed is that it pretty much fixes itself if I do a refresh of the cable box but what’s stranger is that the overall issue seems to stem from when I switch HDMI inputs and use the apps on the tv. I have a brand new Sony XBR-65X900F and also a Bose 700 soundbar with a matching subwoofer and surrounds. The tv and soundbar preform flawlessly with the internal apps. For example, CNN with the app is dead on in sync while the Comcast station has the audio delay. I’m not sure why Comcast and X1 can’t seem to get it together considering the amount of money my monthly bill is. Looks like I’m just doomed to do a lot of X1 box refreshes unless someone here has any advice..... or some firmware update comes along.
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